Letter-sheet form for arithmometers.



No. 668,6!2. Patented Feb. I9, IQUI. lF. SPIEKERMAN & 'L HERTLE. LETTER SHEET FORM FUR ARITHMUMETERS.

V (Application led Har. 26, 1900.) (No Model.)

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'THE Noams PETERS co. PHoTovu'TNo.. wAsmNmoN, n. c.

iNITED STATES PATENT OFFICE.

FRANK SPIEKERMAN, OF ST. LOUIS, MISSOURI, AND LOUIS HERTLE, OF

LOUISVILLE,

KENTUCKY.

LETTER-SHEET FORNI FOR ARITHNIOMETERS.

SPECIFICATION forming part of Letters Pat-ent No. 668,612, dated February 19, 1901.

Application iilec'l March 26, 1900. Serial No.10,261. (No model To all whom, t may 01m/cern:

Be it known that we, FRANK SPIEKEEMAN, a resident of the city of St. Louis, in the State of Missouri, and LOUIS HERTLE, a resident of the city of Louisville, in the State of Kentucky, citizens of the United States, havein-` vented a new and useful Letter-Sheet Form for Arithmometers, of which the following is a specification.

Our invention relates to forms for lett'ersheets for use in machines for tabulating columns of figures, and has for its principal object to adapt said form for convenience of manipulation and for preservation of the rn'anifolding copy.

Our invention consists in the form hereinafter described and claimed.

In the accompanying drawings, which form part of this specification, and wherein like symbols refer to like parts wherever they occur, Figure 1 is a View of our device with the carbon-impression leaf unfolded. Fig. 2 is front view of the sheet folded. A

Our device consists of a sheet of paper folded lengthwise at or near its middle, so that the under half or leaf 1 will constitute a carbon-impression sheet. The top half or leaf 2 is divided by a row of perforations 3, running parallel with the folded edge and located near the middle of said leaf. Another row of perforations 4 extends across the top leaf at right angles to the folded edge and near the middle of said leaf. The top leaf is thus divided by such longitudinal and transverse rows of perforations into four separable rectangular parts or sections 6, each of which is provided with a printed letter head or form or other printed matter near its top and has a blank space beneath the same adapted to receive columns of figuressuch as are printed by an arithmometer. Each of these divisions of the top leaf constitutes a letter-sheet. It is desirable vto perforate the folded edge 5,separating the top leaf from the carbon-impression leaf; but the carbon-impression leaf itself is not perforated.

Our device is used as follows: A sheet of carbon-paper 7 is inserted between the folded leaves, and the form is then inserted in the arithmometer. The columnsof figures printed on the letter sideare manifolded on the carbon-impression sheet, Iand this operation continues until the letter is finished, whereupon the form is adjusted in the arithmometer to work upon another of said letter-sheets, and so on in succession. Thus all of the lettersheets comprised in the form may be filled without removing the form from the machine. When all of the letter-sheets of the form are finished, it is removed and the several letters are separated by tearing the leaf along the rows of perforations and also along the folded edge. The carbon-impression leaf contains a copy of the several letters and in such size and form as to be specially adapted for binding in book form.

It is obvious that the number of letters 011 a sheet may be varied at pleasure by making more than one row of perforations crosswise or by making more than one row of perforations lengthwise. It is also obvious that the heading or printed matter may be varied at pleasure.

What we claim is- A letter-sheet form for arithmometers comprising a sheet folded near its middle into two separable leaves, one of said leaves being blank and of a size and shape convenient for manipulation in an arithmometer and for binding, and the other leaf being divided parallel with the middle fold by one or more rowsl of perforations into similar separable sections of a size and shape adapted to receive the work of an arithmometer, and each comprising a printed letter-head with a blank space below the same, whereby said first leaf is adapted to receive on one side a carbonimpression copy of the matter printed by they arithmometer on all of said letter-sheets in a form suitable for preservation, substantially as described.

FRANK SPIEKERMAN. LOUIS HERTLE. Witnesses to signature of Frank Spiekerman:

JAMES A. CARE, CEAS. E. WISE. Witnesses to signature of Louis Hertle:

D. I. HEYMAN, JOSEPH SELLIGMAN. 

